Modify World Phone Booth

The Federation and the Empire, where mechas are everywhere, are undercurrents under a hundred years of peace. Unwilling ambition grows wildly behind the scenes, hoping to promote war and crown himself a king amidst the ruins of blood and steel. And the sudden appearance of the red phone booth will change the world with every tease, pushing the light of technology into a mysterious chapter. From then on, the mecha was no longer pure, and the roar of the monster was already ready to go. Human beings who longed for the stars also slowly opened their fangs.